/** @license React v16.4.1
 * react-test-renderer-shallow.development.js
 *
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react')) :
	typeof define === 'function' && define.amd ? define(['react'], factory) :
	(global.ReactShallowRenderer = factory(global.React));
}(this, (function (React) { 'use strict';

var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;

var _assign = ReactInternals.assign;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */



/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var validateFormat = function validateFormat(format) {};

{
  validateFormat = function validateFormat(format) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  };
}

function invariant(condition, format, a, b, c, d, e, f) {
  validateFormat(format);

  if (!condition) {
    var error;
    if (format === undefined) {
      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(format.replace(/%s/g, function () {
        return args[argIndex++];
      }));
      error.name = 'Invariant Violation';
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
}

var invariant_1 = invariant;

// Relying on the `invariant()` implementation lets us
// have preserve the format and params in the www builds.

// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
// nor polyfill, then a plain number is used for performance.
var hasSymbol = typeof Symbol === 'function' && Symbol.for;

var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace;
var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
var REACT_TIMEOUT_TYPE = hasSymbol ? Symbol.for('react.timeout') : 0xead1;

function typeOf(object) {
  if (typeof object === 'object' && object !== null) {
    var $$typeof = object.$$typeof;

    switch ($$typeof) {
      case REACT_ELEMENT_TYPE:
        var type = object.type;

        switch (type) {
          case REACT_ASYNC_MODE_TYPE:
          case REACT_FRAGMENT_TYPE:
          case REACT_PROFILER_TYPE:
          case REACT_STRICT_MODE_TYPE:
            return type;
          default:
            var $$typeofType = type && type.$$typeof;

            switch ($$typeofType) {
              case REACT_CONTEXT_TYPE:
              case REACT_FORWARD_REF_TYPE:
              case REACT_PROVIDER_TYPE:
                return $$typeofType;
              default:
                return $$typeof;
            }
        }
      case REACT_PORTAL_TYPE:
        return $$typeof;
    }
  }

  return undefined;
}















function isForwardRef(object) {
  return typeOf(object) === REACT_FORWARD_REF_TYPE;
}

var describeComponentFrame = function (name, source, ownerName) {
  return '\n    in ' + (name || 'Unknown') + (source ? ' (at ' + source.fileName.replace(/^.*[\\\/]/, '') + ':' + source.lineNumber + ')' : ownerName ? ' (created by ' + ownerName + ')' : '');
};

function getComponentName(fiber) {
  var type = fiber.type;

  if (typeof type === 'function') {
    return type.displayName || type.name;
  }
  if (typeof type === 'string') {
    return type;
  }
  switch (type) {
    case REACT_ASYNC_MODE_TYPE:
      return 'AsyncMode';
    case REACT_CONTEXT_TYPE:
      return 'Context.Consumer';
    case REACT_FRAGMENT_TYPE:
      return 'ReactFragment';
    case REACT_PORTAL_TYPE:
      return 'ReactPortal';
    case REACT_PROFILER_TYPE:
      return 'Profiler(' + fiber.pendingProps.id + ')';
    case REACT_PROVIDER_TYPE:
      return 'Context.Provider';
    case REACT_STRICT_MODE_TYPE:
      return 'StrictMode';
    case REACT_TIMEOUT_TYPE:
      return 'Timeout';
  }
  if (typeof type === 'object' && type !== null) {
    switch (type.$$typeof) {
      case REACT_FORWARD_REF_TYPE:
        var functionName = type.render.displayName || type.render.name || '';
        return functionName !== '' ? 'ForwardRef(' + functionName + ')' : 'ForwardRef';
    }
  }
  return null;
}

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */



var emptyObject = {};

{
  Object.freeze(emptyObject);
}

var emptyObject_1 = emptyObject;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @typechecks
 * 
 */

/*eslint-disable no-self-compare */



var hasOwnProperty = Object.prototype.hasOwnProperty;

/**
 * inlined Object.is polyfill to avoid requiring consumers ship their own
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
 */
function is(x, y) {
  // SameValue algorithm
  if (x === y) {
    // Steps 1-5, 7-10
    // Steps 6.b-6.e: +0 != -0
    // Added the nonzero y check to make Flow happy, but it is redundant
    return x !== 0 || y !== 0 || 1 / x === 1 / y;
  } else {
    // Step 6.a: NaN == NaN
    return x !== x && y !== y;
  }
}

/**
 * Performs equality by iterating through keys on an object and returning false
 * when any key has values which are not strictly equal between the arguments.
 * Returns true when the values of all keys are strictly equal.
 */
function shallowEqual(objA, objB) {
  if (is(objA, objB)) {
    return true;
  }

  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
    return false;
  }

  var keysA = Object.keys(objA);
  var keysB = Object.keys(objB);

  if (keysA.length !== keysB.length) {
    return false;
  }

  // Test for A's keys different from B.
  for (var i = 0; i < keysA.length; i++) {
    if (!hasOwnProperty.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {
      return false;
    }
  }

  return true;
}

var shallowEqual_1 = shallowEqual;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * 
 */

function makeEmptyFunction(arg) {
  return function () {
    return arg;
  };
}

/**
 * This function accepts and discards inputs; it has no side effects. This is
 * primarily useful idiomatically for overridable function endpoints which
 * always need to be callable, since JS lacks a null-call idiom ala Cocoa.
 */
var emptyFunction = function emptyFunction() {};

emptyFunction.thatReturns = makeEmptyFunction;
emptyFunction.thatReturnsFalse = makeEmptyFunction(false);
emptyFunction.thatReturnsTrue = makeEmptyFunction(true);
emptyFunction.thatReturnsNull = makeEmptyFunction(null);
emptyFunction.thatReturnsThis = function () {
  return this;
};
emptyFunction.thatReturnsArgument = function (arg) {
  return arg;
};

var emptyFunction_1 = emptyFunction;

/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */





/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning$1 = emptyFunction_1;

{
  var printWarning = function printWarning(format) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    var argIndex = 0;
    var message = 'Warning: ' + format.replace(/%s/g, function () {
      return args[argIndex++];
    });
    if (typeof console !== 'undefined') {
      console.error(message);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      throw new Error(message);
    } catch (x) {}
  };

  warning$1 = function warning(condition, format) {
    if (format === undefined) {
      throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
    }

    if (format.indexOf('Failed Composite propType: ') === 0) {
      return; // Ignore CompositeComponent proptype check.
    }

    if (!condition) {
      for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
        args[_key2 - 2] = arguments[_key2];
      }

      printWarning.apply(undefined, [format].concat(args));
    }
  };
}

var warning_1 = warning$1;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */



var ReactPropTypesSecret$1 = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';

var ReactPropTypesSecret_1 = ReactPropTypesSecret$1;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */



{
  var invariant$2 = invariant_1;
  var warning = warning_1;
  var ReactPropTypesSecret = ReactPropTypesSecret_1;
  var loggedTypeFailures = {};
}

/**
 * Assert that the values match with the type specs.
 * Error messages are memorized and will only be shown once.
 *
 * @param {object} typeSpecs Map of name to a ReactPropType
 * @param {object} values Runtime values that need to be type-checked
 * @param {string} location e.g. "prop", "context", "child context"
 * @param {string} componentName Name of the component for error messages.
 * @param {?Function} getStack Returns the component stack.
 * @private
 */
function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
  {
    for (var typeSpecName in typeSpecs) {
      if (typeSpecs.hasOwnProperty(typeSpecName)) {
        var error;
        // Prop type validation may throw. In case they do, we don't want to
        // fail the render phase where it didn't fail before. So we log it.
        // After these have been cleaned up, we'll let them throw.
        try {
          // This is intentionally an invariant that gets caught. It's the same
          // behavior as without this statement except with a better message.
          invariant$2(typeof typeSpecs[typeSpecName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'the `prop-types` package, but received `%s`.', componentName || 'React class', location, typeSpecName, typeof typeSpecs[typeSpecName]);
          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
        } catch (ex) {
          error = ex;
        }
        warning(!error || error instanceof Error, '%s: type specification of %s `%s` is invalid; the type checker ' + 'function must return `null` or an `Error` but returned a %s. ' + 'You may have forgotten to pass an argument to the type checker ' + 'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' + 'shape all require an argument).', componentName || 'React class', location, typeSpecName, typeof error);
        if (error instanceof Error && !(error.message in loggedTypeFailures)) {
          // Only monitor this failure once because there tends to be a lot of the
          // same error.
          loggedTypeFailures[error.message] = true;

          var stack = getStack ? getStack() : '';

          warning(false, 'Failed %s type: %s%s', location, error.message, stack != null ? stack : '');
        }
      }
    }
  }
}

var checkPropTypes_1 = checkPropTypes;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var ReactShallowRenderer = function () {
  function ReactShallowRenderer() {
    _classCallCheck(this, ReactShallowRenderer);

    this._context = null;
    this._element = null;
    this._instance = null;
    this._newState = null;
    this._rendered = null;
    this._rendering = false;
    this._forcedUpdate = false;
    this._updater = new Updater(this);
  }

  ReactShallowRenderer.prototype.getMountedInstance = function getMountedInstance() {
    return this._instance;
  };

  ReactShallowRenderer.prototype.getRenderOutput = function getRenderOutput() {
    return this._rendered;
  };

  ReactShallowRenderer.prototype.render = function render(element) {
    var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : emptyObject_1;

    !React.isValidElement(element) ? invariant_1(false, 'ReactShallowRenderer render(): Invalid component element.%s', typeof element === 'function' ? ' Instead of passing a component class, make sure to instantiate ' + 'it by passing it to React.createElement.' : '') : void 0;
    // Show a special message for host elements since it's a common case.
    !(typeof element.type !== 'string') ? invariant_1(false, 'ReactShallowRenderer render(): Shallow rendering works only with custom components, not primitives (%s). Instead of calling `.render(el)` and inspecting the rendered output, look at `el.props` directly instead.', element.type) : void 0;
    !(isForwardRef(element) || typeof element.type === 'function') ? invariant_1(false, 'ReactShallowRenderer render(): Shallow rendering works only with custom components, but the provided element type was `%s`.', Array.isArray(element.type) ? 'array' : element.type === null ? 'null' : typeof element.type) : void 0;

    if (this._rendering) {
      return;
    }

    this._rendering = true;
    this._element = element;
    this._context = getMaskedContext(element.type.contextTypes, context);

    if (this._instance) {
      this._updateClassComponent(element, this._context);
    } else {
      if (isForwardRef(element)) {
        this._rendered = element.type.render(element.props, element.ref);
      } else if (shouldConstruct(element.type)) {
        this._instance = new element.type(element.props, this._context, this._updater);

        this._updateStateFromStaticLifecycle(element.props);

        if (element.type.hasOwnProperty('contextTypes')) {
          currentlyValidatingElement = element;

          checkPropTypes_1(element.type.contextTypes, this._context, 'context', getName(element.type, this._instance), getStackAddendum);

          currentlyValidatingElement = null;
        }

        this._mountClassComponent(element, this._context);
      } else {
        this._rendered = element.type(element.props, this._context);
      }
    }

    this._rendering = false;
    this._updater._invokeCallbacks();

    return this.getRenderOutput();
  };

  ReactShallowRenderer.prototype.unmount = function unmount() {
    if (this._instance) {
      if (typeof this._instance.componentWillUnmount === 'function') {
        this._instance.componentWillUnmount();
      }
    }

    this._context = null;
    this._element = null;
    this._newState = null;
    this._rendered = null;
    this._instance = null;
  };

  ReactShallowRenderer.prototype._mountClassComponent = function _mountClassComponent(element, context) {
    this._instance.context = context;
    this._instance.props = element.props;
    this._instance.state = this._instance.state || null;
    this._instance.updater = this._updater;

    if (typeof this._instance.UNSAFE_componentWillMount === 'function' || typeof this._instance.componentWillMount === 'function') {
      var beforeState = this._newState;

      // In order to support react-lifecycles-compat polyfilled components,
      // Unsafe lifecycles should not be invoked for components using the new APIs.
      if (typeof element.type.getDerivedStateFromProps !== 'function' && typeof this._instance.getSnapshotBeforeUpdate !== 'function') {
        if (typeof this._instance.componentWillMount === 'function') {
          this._instance.componentWillMount();
        }
        if (typeof this._instance.UNSAFE_componentWillMount === 'function') {
          this._instance.UNSAFE_componentWillMount();
        }
      }

      // setState may have been called during cWM
      if (beforeState !== this._newState) {
        this._instance.state = this._newState || emptyObject_1;
      }
    }

    this._rendered = this._instance.render();
    // Intentionally do not call componentDidMount()
    // because DOM refs are not available.
  };

  ReactShallowRenderer.prototype._updateClassComponent = function _updateClassComponent(element, context) {
    var props = element.props,
        type = element.type;


    var oldState = this._instance.state || emptyObject_1;
    var oldProps = this._instance.props;

    if (oldProps !== props) {
      // In order to support react-lifecycles-compat polyfilled components,
      // Unsafe lifecycles should not be invoked for components using the new APIs.
      if (typeof element.type.getDerivedStateFromProps !== 'function' && typeof this._instance.getSnapshotBeforeUpdate !== 'function') {
        if (typeof this._instance.componentWillReceiveProps === 'function') {
          this._instance.componentWillReceiveProps(props, context);
        }
        if (typeof this._instance.UNSAFE_componentWillReceiveProps === 'function') {
          this._instance.UNSAFE_componentWillReceiveProps(props, context);
        }
      }
    }
    this._updateStateFromStaticLifecycle(props);

    // Read state after cWRP in case it calls setState
    var state = this._newState || oldState;

    var shouldUpdate = true;
    if (this._forcedUpdate) {
      shouldUpdate = true;
      this._forcedUpdate = false;
    } else if (typeof this._instance.shouldComponentUpdate === 'function') {
      shouldUpdate = !!this._instance.shouldComponentUpdate(props, state, context);
    } else if (type.prototype && type.prototype.isPureReactComponent) {
      shouldUpdate = !shallowEqual_1(oldProps, props) || !shallowEqual_1(oldState, state);
    }

    if (shouldUpdate) {
      // In order to support react-lifecycles-compat polyfilled components,
      // Unsafe lifecycles should not be invoked for components using the new APIs.
      if (typeof element.type.getDerivedStateFromProps !== 'function' && typeof this._instance.getSnapshotBeforeUpdate !== 'function') {
        if (typeof this._instance.componentWillUpdate === 'function') {
          this._instance.componentWillUpdate(props, state, context);
        }
        if (typeof this._instance.UNSAFE_componentWillUpdate === 'function') {
          this._instance.UNSAFE_componentWillUpdate(props, state, context);
        }
      }
    }

    this._instance.context = context;
    this._instance.props = props;
    this._instance.state = state;

    if (shouldUpdate) {
      this._rendered = this._instance.render();
    }
    // Intentionally do not call componentDidUpdate()
    // because DOM refs are not available.
  };

  ReactShallowRenderer.prototype._updateStateFromStaticLifecycle = function _updateStateFromStaticLifecycle(props) {
    var type = this._element.type;


    if (typeof type.getDerivedStateFromProps === 'function') {
      var oldState = this._newState || this._instance.state;
      var partialState = type.getDerivedStateFromProps.call(null, props, oldState);

      if (partialState != null) {
        var newState = _assign({}, oldState, partialState);
        this._instance.state = this._newState = newState;
      }
    }
  };

  return ReactShallowRenderer;
}();

ReactShallowRenderer.createRenderer = function () {
  return new ReactShallowRenderer();
};

var Updater = function () {
  function Updater(renderer) {
    _classCallCheck(this, Updater);

    this._renderer = renderer;
    this._callbacks = [];
  }

  Updater.prototype._enqueueCallback = function _enqueueCallback(callback, publicInstance) {
    if (typeof callback === 'function' && publicInstance) {
      this._callbacks.push({
        callback: callback,
        publicInstance: publicInstance
      });
    }
  };

  Updater.prototype._invokeCallbacks = function _invokeCallbacks() {
    var callbacks = this._callbacks;
    this._callbacks = [];

    callbacks.forEach(function (_ref) {
      var callback = _ref.callback,
          publicInstance = _ref.publicInstance;

      callback.call(publicInstance);
    });
  };

  Updater.prototype.isMounted = function isMounted(publicInstance) {
    return !!this._renderer._element;
  };

  Updater.prototype.enqueueForceUpdate = function enqueueForceUpdate(publicInstance, callback, callerName) {
    this._enqueueCallback(callback, publicInstance);
    this._renderer._forcedUpdate = true;
    this._renderer.render(this._renderer._element, this._renderer._context);
  };

  Updater.prototype.enqueueReplaceState = function enqueueReplaceState(publicInstance, completeState, callback, callerName) {
    this._enqueueCallback(callback, publicInstance);
    this._renderer._newState = completeState;
    this._renderer.render(this._renderer._element, this._renderer._context);
  };

  Updater.prototype.enqueueSetState = function enqueueSetState(publicInstance, partialState, callback, callerName) {
    this._enqueueCallback(callback, publicInstance);
    var currentState = this._renderer._newState || publicInstance.state;

    if (typeof partialState === 'function') {
      partialState = partialState.call(publicInstance, currentState, publicInstance.props);
    }

    // Null and undefined are treated as no-ops.
    if (partialState === null || partialState === undefined) {
      return;
    }

    this._renderer._newState = _assign({}, currentState, partialState);

    this._renderer.render(this._renderer._element, this._renderer._context);
  };

  return Updater;
}();

var currentlyValidatingElement = null;

function getDisplayName(element) {
  if (element == null) {
    return '#empty';
  } else if (typeof element === 'string' || typeof element === 'number') {
    return '#text';
  } else if (typeof element.type === 'string') {
    return element.type;
  } else {
    return element.type.displayName || element.type.name || 'Unknown';
  }
}

function getStackAddendum() {
  var stack = '';
  if (currentlyValidatingElement) {
    var name = getDisplayName(currentlyValidatingElement);
    var owner = currentlyValidatingElement._owner;
    stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner));
  }
  return stack;
}

function getName(type, instance) {
  var constructor = instance && instance.constructor;
  return type.displayName || constructor && constructor.displayName || type.name || constructor && constructor.name || null;
}

function shouldConstruct(Component) {
  return !!(Component.prototype && Component.prototype.isReactComponent);
}

function getMaskedContext(contextTypes, unmaskedContext) {
  if (!contextTypes) {
    return emptyObject_1;
  }
  var context = {};
  for (var key in contextTypes) {
    context[key] = unmaskedContext[key];
  }
  return context;
}



var ReactShallowRenderer$2 = Object.freeze({
	default: ReactShallowRenderer
});

var ReactShallowRenderer$3 = ( ReactShallowRenderer$2 && ReactShallowRenderer ) || ReactShallowRenderer$2;

// TODO: decide on the top-level export form.
// This is hacky but makes it work with both Rollup and Jest.
var shallow = ReactShallowRenderer$3.default ? ReactShallowRenderer$3.default : ReactShallowRenderer$3;

return shallow;

})));
